US 12,261,639 B1
Advanced wireless communication system incorporating wideband frequency hopping
Nimesh D. Parikh, Jacksonville, FL (US); Aaron Vinh Thanh Do, Marina Del Rey, CA (US); Claus Muschallik, Singapore (SG); Simon Wunderlich, Marina Del Rey, CA (US); Ashish Parikh, Venice, CA (US); and Amol Parikh, Los Angeles, CA (US)
Assigned to Doodle Labs LLC, Marina Del Rey, CA (US)
Filed by Doodle Labs LLC, Marina Del Rey, CA (US)
Filed on Sep. 4, 2024, as Appl. No. 18/823,998.
Claims priority of provisional application 63/537,892, filed on Sep. 12, 2023.
Int. Cl. H04B 1/7143 (2011.01); H04B 1/7156 (2011.01)
CPC H04B 1/7143 (2013.01) [H04B 1/7156 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A frequency-hopping wireless communication system, comprising:
a frequency hopping sequence generator configured to create a hopping sequence map M1 of available local oscillator (LO) frequencies across a wideband frequency range;
a wireless transmitter, including:
a frequency synthesizer configured to generate as an output a predefined LO frequency signal in response to a control signal defining a specific LO frequency;
a frequency controller responsive to the hopping sequence map M1 created by the frequency hopping sequence generator and providing as an output the control signal to the frequency synthesizer so as to control the output generated by the frequency synthesizer to follow a hopping sequence and thereby change the predefined LO frequency signal as a function of time;
a mixer receiving, as separate inputs, a communication signal for transmission across the frequency-hopping wireless communication system and the predefined LO frequency signal generated by the frequency synthesizer, the mixer configured to combine the communication signal and the predefined LO frequency signal and generate therefrom a frequency-hopped radio frequency (RF) signal related thereto;
an adjustable bandpass filter positioned at the output of the mixer and configured to pass only a defined band around a center frequency of the frequency-hopped RF signal, wherein the center frequency of the adjustable bandpass filter is controlled by the frequency controller; and
an antenna system for converting the output from the adjustable bandpass filter into a frequency-hopped wireless communication signal for transmission by the wireless transmitter; and
a remotely-located wireless receiver, including:
an antenna system for receiving the frequency-hopped wireless communication signal sent by the wireless transmitter and converting into a received frequency-hopped RF communication signal;
a frequency synthesizer configured to generate a receiver LO frequency signal in response to a control signal applied as an input thereto;
a frequency controller responsive to the hopping sequence map M1 and providing as an output the control signal provided to the frequency synthesizer so as to control a LO frequency value of the receiver LO frequency signal to follow the hopping sequence map M1;
a mixer receiving as inputs the received frequency-hopped RF communication signal and the receiver LO frequency signal, the mixer configured to combine the received frequency-hopped RF communication signal and the receiver LO frequency signal and produce as an output therefrom a baseband version of the transmitted communication signal; and
a bandpass filter disposed to receive the output from the mixer and configured to pass only a defined frequency band around the baseband version of the transmitted communication signal, providing as an output of the remotely-located wireless receiver a recovered communication signal;
wherein the frequency hopping sequence generator comprises a network element disposed separately from the wireless transmitter, the frequency hopping sequence generator configured to transmit the hopping sequence map M1 to both the wireless transmitter and the remotely-located wireless receiver and the network element further comprises a GPS component to provide frequency hopping sequence synchronization between the wireless transmitter and the remotely-located wireless receiver.